#!/bin/sh
# Copyright 2011 Google Inc.
# Copyright 2011 Arno Rehn <arno@arnorehn.de>
# Runs the "screen" command on selected tests or the set of all tests.
# Options:
#   -n run tests under llvm-native
#   -f stop on fail
#   -r recompile the screen program
#   -j run screen in JIT mode
#   -v turn on verbose output
#   -d <test-dir> specify test directory (defaults to basic tests)

root=${SOURCES_ROOT:-"$(dirname $(dirname $0))"}
builddir=${BUILD_ROOT:-$(test -f "$root/build/crack" && 
           echo "$root/build" || echo "$root")}   # try to guess BUILD_ROOT if none is provided

echo "Using root directory: $root"
echo "      build directory: $builddir"
echo

lib_paths="$root/lib:$root/screen:$builddir/lib"
builders="-bjit"
test_dir="$root/screen/tests/basic"
opts="--diff"
screen_jit=false
screen_recompile=false

# try to guess CRACK_LIB_PATH if none is provided
if [ -z "$CRACK_LIB_PATH" ]; then
    if [ -f "$root/build/crack" ]; then
        export CRACK_LIB_PATH=$builddir/lib
    else
        export CRACK_LIB_PATH=$builddir/.libs
    fi
fi

run_screen() {
    if $screen_jit; then
        $builddir/crack -l "$lib_paths" $root/screen/screen.crk \
            -t "$builddir" -l "$lib_paths" \
            -c "$builddir/crack" -s "$root" -o "$builddir/screen/output" \
            "$builders" \
            $opts "$@"
        return
    fi

    if $screen_recompile || [ ! -e $builddir/test/screen.bin ]; then
        echo "rebuilding screen.bin..."
        $builddir/crack -B llvm-native -Gl "$lib_paths" \
            -b out=$builddir/test/screen.bin $root/screen/screen.crk
    fi

    $builddir/test/screen.bin -c "$builddir/crack" -s "$root" -l "$lib_paths" \
        -t "$builddir" -o "$builddir/screen/output" "$builders" $opts "$@"
}

args=$(getopt 'fnrjvd:' "$@")
eval set -- "$args"

# process options
while true; do
    
    case "$1" in
        -n) builders='-bnative' ;;
        -f) opts="$opts --stop-on-fail" ;;
        -r) screen_recompile=true ;;
        -j) screen_jit=true ;;
        -v) opts="$opts -v" ;;
        -d) test_dir="$2"; shift ;;
        --) shift ; break ;;
    esac
    
    shift
done

# ensure output directory exits
[ ! -e "$builddir/screen/output" ] && mkdir -p "$builddir/screen/output"
[ ! -e "$builddir/test" ] && mkdir -p "$builddir/test"

tests=""
for arg in "$@"; do
    tests="$tests -f $arg"
done

if [ -n "$tests" ]; then
    run_screen $tests
else
    run_screen -d "$test_dir"
fi

exit $?
